DNA polymerases need a primer oligonucleotide (RNA or DNA) - their substrates are an existing 3'-OH group and a dNTP. The primase however is a typical RNA polymerase, capable of initiating polynucleotide synthesis de novo by positioning a complementary ribonucleoside 5'-triphosphate opposite its complementary DNA base.
Alison Schapker. Alison Schapker is an American television writer and producer. She is well known for her work on the ABC espionage series Alias and for the FOX science-fiction series Fringe.
AMY GOODMAN: Award-winning filmmaker Laura Poitras, speaking about her new documentary, Citizenfour, which features NSA whistleblower Edward Snowden. You can go to our website, democracynow.org, to see a video timeline featuring all our coverage based on Snowdenâs revelations.MY GOODMAN: Award-winning filmmaker Laura Poitras, speaking about her new documentary, Citizenfour, which features NSA whistleblower Edward Snowden. You can go to our website, democracynow.org, to see a video timeline featuring all our coverage based on Snowdenâs revelations.